Carburetor



A. J. HAUSKINS CARBURETOR 21 Filed Sent. 17. 1923 f 3 Sheets-Shut l 4 137 7 G J5 f I his Wifarrzgy:

- 1,516,276 A.' J. HAUSKINE} CARBURETOR Filed Sent. 17. 19,23 3shun-shut 5 Patented Now 18,1924.

- u ITED. STATES PATENT oFF cE.

ALVIS'J'. HAUSKINS, or CHICAGO, ILLINOIS. I

CARBURETOR.

Application filed September 17, 1923. Serial No. 663,045.

moreparticularly pointed out in the ap-" pended claims. One of theobjects of my present invention is to produce a carburetor without afloat valve, and in which the fuel ,will be drawn into the carbu'retorbysuction.

Another object is to produce an adjustable device, in the type ofcarburetor referred to, which will perfectly cooperate with a needlevalve to produce proper admixture of air and fuel andthus function witha maximum of efficiency.

Another and important object of the in 'vention is to produce a'devicewhich will .draw fuel into the mixing chamber when the air valve isclosed oropen to a very slight extent, thus enabling the operator tostart the engine at a slow or idling speed. 3 Another object is to"produce'in a floatless carburetor- 'such an arrangement of the air valvewhich will not only take the place of the usual valve of thebutterflytype but will directthe passage of air to a space immediatelysurrounding the fuel outletfrom the needle valve, thus permitting an.automatic and better flow of fuel from the fuel supply tank.

Another object is to produce a carburetor which ,is .simple inconstruction, .easy to assemble ,-relatively cheap to fabricate, has

no complicated parts to get-out of order,

which"aflordseasy access to those parts which may require adjustment andwhich may be adapted for attachment to substantially every type, ofinternal combustion In the drawings: I Fig. 1 is a side view of thecarburetor as it appears when coupled to the manifold pipe of aninternal combustion engine.

Fig. 2 is atop plan view of the same. Fig. 3 is a bottomplan view of thesame. Fig. 4 is a longitudinal, vertical, sectional view, taken in theplane of the dotted line- H of Fig. 2, looking in the directionindicated by the arrow. Y e I F ig. 5 is a horizontal sectional view,taken in the plane of the dotted line 5.5 of Fig.

4, looking in the' directionindicated by the arrow.

Fig. 6 is a transverse, vertical sectional view, taken in the plane ofthe dotted line :6-6 of Fig. 2, looking in the direction'indicated bythe arrow.

Fig. 7 is a top plan view of the device, the

adjusting lever and connected operating parts being shifted into aposition dilferent from the positions shown in Fig. 2.

Fig. 8 is a longitudinal, vertical sectional view, taken in the plane ofthe'dotted line 88 of Fig. 7, looking in the direction indicated by thearrow. Y

Fig. 9 is a transverse, horizontal sectional view, taken in the plane ofthe dotted line 99 of Fig. 8, looking in the direction indicated by thearrow. j

A indicates, as a whole, the body of my carburetor, of generally tubularform and provided at one end with a flange a adapted i to be bolted bybolts 1 to a flange I2 ofthe manifold B'of an internal combustionengine. A packing or washer 2 is inserted between the flanges-a, b. Thebody A is provided with acentral, tubular. open end portion C whichcontains'an air-passageway 3. M

D is the gasoline feed-pipe which is screwed into a suitablelongitudinal aperture in the housing A by screw threads 4- and;

projects into the inlet air passageway 3. At its outer or rear end thefeed pipe D is interiorly screw threaded so as to afford convenientmeans ofattachment to any suitable source of asoline or other fuelsupply. The feed pipe l) is provided at its inner end with asomewhatelongated tapered bore '5 con-' stituting a valve seat for theneedle valve E.

The needle valve E enters the tapered bore 5 of the pipe D and issupported'upontheshort arm member of a longitudinally movmovementthrough the piston member by' the adjusting nut 11. The passageway 9 inthe body A is enlarged, as indicated at 12,

' to form an annular shoulder 13. The body A is provided with anenlarged opening 14, of a size forming a bearing seat'for the member 10and adapted to permit of the reciprocation of the movable piston membertherein. Incidentally the size of the opening 14 also affords access forthe convenient manipulation of the adjustingnut 11. l

The head or piston 10 carries, on its forward face, a stud 15 aroundwhich is wrapped a spiral spring 16. This spring 16 presses at one endagainst the forward face of the member 10 and at its other end adjacentthe annular shoulder 13 which surrounds the rear end of the passageway9'.

The. body A, above the openin or recess 14., is longitudinally slottedat 1?, the side walls of said slot forming guide-ways for an arm 18.This arm 18 "projects from the movable head or piston 10 through saidslot, and it has a pivotal connection at 19 with a/bifurcated boss 20,which latter is bolted by a screw 21 to a rod 22. This rod '22, at itsforward end, has a sliding bearing through a bearing lug 23 whichprojects laterally from and is integral with the bell crank lever F;This bell crank lever F is pivotally mounted at f to the side of thebody or housing A, one of its members or arms 24, (the lower one whenlooking at Fig. 1) having a straight margin .25 adapted, in' oneposition of the lever F, to contact with the rear face 26 of the flangea or other stop. The other (rear) member or arm of the lever F isprovided with an apertured bearingstud 27 in which one end of anoperatin r0d 28 is adjustablysecured by means of t e set screw 29, orother [convenient means.

The open mouthed passageway 3 is controlled b a two-member valve G, as awhole, which iproperly open, will permit air to pass into a mixingchamber H. The air valve G consists of two cylindrical postlike members30, 31, the central vertical axes of which are at right angles to thelongitudinal axis of the fuel pipe D. The members 30 and 31 are eachprovided on its lower end with a ear or with gear teeth 32 whichintermes as clearly shown in Fig. 3, so that when the member 30 isrotated on its longitudinal, vertical axis, the other member 31 willalso rotate.

A bottom plate 33 is'fast'enedbyscrews 34 to the under side of thehousing A and serves to hold the valve members 30, 31, in position. Tothis bottom plate are suitably riveted'at 35, 35, two interiorly andupwardly projecting pivotal studs 36, adapted to enter axial apertures37, 37, in the valve members 30, 31, and about which said valve membersmay rotate. I

'The valve member 30 is provided at its upper endvwith an upwardlyextending axle or stud member 38, the central, longitudinal axis ofwhich coincides with the similar axis of the stud 36 on which saidmember 30 is mounted. The upwardly extending stud 38 passes upwardlythrough a suitableaperture' in the body A, and the boss 39 on theregulatingarm J, and engages the slot-40 in a cam disc 41. clearly shownin Figs. 2 and 6, is flattened or reduced in size 'at 42 so that it mayhave a slidingfit or bearing in said slot 40. The cam disc 41 is set inatop plate I and is held upon the boss39 by a set screw or bolt 43,which-passes through a slot 44 in said cam The end of the stud 38, as Idisc 41, said slot 44 being parallel to the slot 40 as clearly shown inFigs. 2 and 6. The disc 41, as ,clearly shown in Fig. 2, is

mounted in the plate I, eccentrically to thevertical axis of the studmember 38.

The other valve member 31 is provided.

with an upwardly extending axial trunnion or stud 45 which extends tothe under side of, but not through the plate I, passing through asuitable aperture in a boss 46 also on the arm J. The stud 45 is securedto 1 said boss 46 by the laterally extending bolt 47 and also by theverticall extending bolt tive or laterally rotative movement between theplate I and the boss 46.

' The two members of the valve G are suitably recessed or cut awayasshown at 50 for the purpose of affording communication be tween theair passageway 3 and themixing chamber H, and are also cut away as shownat 51 to afford close contact with the exterior of the end of thefueltube D. When the two members 30 and '31 are turned so that theycontact at the recesses 51 with said tube D, the passage of airwill becompletely shut off, although, as shown in Fig. 5, fuel may enter saidchamber if the needle valve E is moved away fromits seat 5, the end ofthe pipe D opening into said mixing chamber. The mixing chamber Hconsists of the inner end of the passageway 3 beyond the valve G and thepassageway formed in a tubular cylindrical member 52, whi h latter isseatedin the body A and extends forwardly into the manifold B. Oneportion of the rear wall of the member 52 is slotted at 53 to providefor the longitudinal reciprocation of the rod 6 which connects theneedle valve E with the piston member 10.

The parts are shown open 'for the free passage of air in Fig. 9, and areshown closed in Figs. 4 and 5.

Shifting of the position of thedisc or eccentric 41 is accomplishedthrough the medium of an upwardly extending and for holding the wardlybent flange member K, mounted upon the plate I, the position of theflange K being such as to adapt it for coutactavith the forward end ofthe rod 22.

.Assume that the parts are in the position shown in Figs. 1, 2, l and 5it will be noticed that the needle valve E is completely seated so thatnogasoline or other fuel may enter through the supply pipe also that thespring 16 is extended its full length, piston 10 to the proper positionto the rear, and holding said nedle'valve seated because of theretracted position of the rod 6. It-willalso be noted that the airvalveG is closed, the members 30, 31,

= being in contact against the outside of the Assuming the parts havebeen adjusted V, properly, tlie first movement of the operator" will beto move the rod 28 which in turn will actuate the bell crank lever F,raise the end of the arm 22-. The-engine is then cranked either manuallyor by suitable starting mechanism. The turn over of the enginewillproduce a suction in the manifold and through the chamber H, and

tension of the spring 16 and thus to draw the piston 10, together withthe arm 6 and needle valve E forward toward the maniturn operate torotate the air valves30, 31,-

and permit the proper amount of air to enter from the passageway 3,through said valve members and into the mixing chamber H to properly mixwith the fuel.

It will be noted that the air passage 3 isrelatively large as are theopenings 50 in the valve members 30, 81, and that the end of the fuelpipe D is centrally located in these openings. Hence when the needlepassageway 9, sufficient to overcome the valve is opened, the fuel isinjected by suction into a 'volume of air and properly mixes therewith,the air and the fuel thus being automatically drawn into and through thecarburetor by suction entirely without the necessity of any feed orauxiliary device to force the fuel into the carburetor or to.

supply it to the carburetor by ravity flow or otherwise. As the valve (3is opened further to enlarge this air space surrounding the needlevalve, the increased speed of the engine naturally maintains the vacuumand the proper suction pull.

To those familiar with the operation of internal combustion engines andwith carburetors, it'will be understood of course that the handle J isturned in ,such direction as will be necessary to admit of the desiredamount of air, and that the supply of air may thus be regulated. It willalso be understood that the needle valve will be automatically movedforward to open or backto con'strict the passageway and shut o'ff thesupply of gas, accordingly as the relative position of the arm 22 bearsto the inclined plate K, and that when the supply of gas is shut oil",the spring 16 will automatically move the bar 6 to the rear and theneedlefvalve E will thus beclosed tightly in its seat.

It will be noted that this carburetor when used on! an engine fordriving vehicles, entirely eliminates the cost and the necessity for theuse of any vacuum or other device required for lifting the fuel from thesupply tank to a point above the carburetor, since the pipe D isconnected directly to the supply tank.

It will be understood that in some uses of the present invention, thespring 15 may be arranged so as to tend to hold the piston 10 in theposition shown in Fig. 5, thereby maintaining the needle valve Enormally away from its seat and the closingof the valve on the seat beregulated through the arm J.

This and other changes are thought to be so obvious that more specificillustration or description is not necessary.

A particularly important feature of the invention lies in theconstruction whereby the end of the fuel supply pipe D opens at a pointbeyond the throttle valve when the latter is closed,this being moreclearly shown in Fig. 5.

I claim as my invention:

1. A carburetor of the class described comprising a casing formed withan air intake passage and a fuel nozzle extending axially into said airpassage, valve members adapted to close said air passage adjacent saidfuel nozzle, a passageway extending through said casing parallel to saidfuel nozzle, and communicating with said air intake passage, a springactuated piston mounted in said passageway, a needle valve associatedwithsaid fuel nozzle, and means extending through said passagewayinto-said air intake passage and operably connecting said piston andneedle valve.

2. In a carburetor of the class described comprising a casing formedwith an air intake passage, a fuel nozzle extending into said passage,valve members rotatably mounted in said casing and adapted to close saidpassage adjacent said fuel nozzle, a needle valve associated with saidfuel nozzle, a piston in said casing and mounted for reciprocatorymovement by the suction in said air passage and connected to said needlevalve, and means operatlvely connectlng said piston and said valvemembers for positively adjusting said needle valve independent of thevacuumin said air passage.

3. In a carburetor of the class described comprising a casing formedwith an air intake passage, a fuel nozzle extending into said airpassage, valve members rotatably piston.

mounted in said casing and adapted to close said passage adjacent said"fuel nozzle, a needle valve associated with said fuel mozzle, a pistonmounted in said casin and connected to said needle valve, said plstonbeing operable by the suction in said air passage to adjust said needlevalve relative to said fuel nozzle, cam elements mounted on saidvalve-members, an inclined abutment carried by'said cam elements, andmeans secured to said piston, and operatively engaging said inclinedabutment, whereby said piston and needle valve may be adjustedindependently of the action of suction on said In testimony that I claimthe foregoing as my invention I affix my signature, in the presence oftwo witnesses, this 13th day of September, 1923.

ALVIS J. HAUSKINS. lVitnesses v TAYLOR E. BROWN, B. L. llfLAoGREeoR.

